Shibuya, Chiba

Atsushi Shibuya, Chiba JP

Patent application number

Description

Published

20080304393

Resin Composition And Use Thereof - Provided is a resin composition suitable for an optical element in which the moldability, thermal resistance, mechanical strength, and low birefringence are not impaired, the deterioration is hardly generated although the laser light nearby the UV is used, change in the optical properties during the use are extremely small, particularly the light transmittance is maintained high, and a foreign substance is hardly deposited on a surface of the molded product such as an optical element, also provided is an optical element obtained by molding the resin composition, and an optical pickup device using the optical element. The thermoplastic resin composition contains the polymer having a specific structure and two kinds of specific optical stabilizers in a specific mass ratio among a hindered amine light stabilizer having the molecular weight of

12-11-2008

20090176940

Process for Producing Cycloolefin Resin Composition, and Cycloolefin Resin Composition - Provided is a process for producing a cycloolefin resin composition, comprising a step of hydrogenating a resin composition. The resin composition before hydrogenation, which is used in the above step, includes 0.01 to 20 parts by weight of an unsaturated hydrocarbon compound having a boiling point of 50° C. or higher, for example, a monomer employed in polymerization, per 100 parts by weight of the resin composition.

07-09-2009

20090310471

Resin composition and optical component - There are provided a resin composition that is suitable for an optical component which, while maintaining moldability, low birefringence, heat resistance, mass productivity, mechanical strength, and light transmittance, hardly exhibits a low light transmittance during the use of a blue-violet laser beam source and a deterioration in optical properties, and an optical component produced by molding the resin composition, and a optical pickup device using the optical component. The present invention provides a resin composition comprising 0.05 to 5 parts by weight of the specific hindered amine compound based on 100 parts by weight of the polymer having an alicyclic structure in at least a part of repeating structural unit, an optical component produced by molding the resin composition, and a optical pickup device using the optical component.

12-17-2009

20100016542

Molding material, use thereof, and process for producing molding material - A molding material of the present invention includes a polymer having a repeating structural unit whose part or whole contains an alicyclic structure, a phenolic stabilizer, a hindered amine light stabilizer and a phosphorus stabilizer, in which at least a part of the phenolic stabilizer and/or hindered amine light stabilizer is presently adhering to the surface of particles of the above polymer.

01-21-2010

20100074083

RESIN COMPOSITION AND MOLDED PRODUCT OBTAINED BY MOLDING THE RESIN COMPOSITION - Provided are a resin composition comprising 100 parts by mass of the polymer having an alicyclic structure at least in a part of a repeating structural unit and 0.05 to 5 parts by mass of a hindered amine compound having a carbon atom at a ratio of from 67% by weight to 80% by weight in the molecular structure and having a molecular weight of from 500 to 3500, a novel piperidine derivative having a piperidylaminotriazine skeleton, a molded product such as an optical component obtained by molding the resin composition, and an optical pickup device which employs the optical component.

03-25-2010

Patent applications by Atsushi Shibuya, Chiba JP

Hitoshi Shibuya, Chiba JP

Patent application number

Description

Published

20090317813

METHOD OF PREDICTING METASTASIS OF ORAL CAVITY CANCER INTO CERVICAL LYMPH NODE AND DIAGNOSIS KIT TO BE USED IN THE PREDICTION - A method for objectively predicting possibility of metastasis to a cervical lymph node in an early stage for an individual case diagnosed as an oral cavity cancer, and a diagnosis kit to be used in the prediction are provided. The method includes a step of assaying expression amounts of metastasis prediction genes in which the expression amounts are changed between a metastasis group and a non-metastasis group, with respect to a sample collected from a primary legion of the oral cavity cancer. Further, the method includes a step of predicting the possibility of the metastasis by comparing the expression amounts of the metastasis gene group with the expression amounts of the metastasis prediction genes in a metastasis group and/or a non-metastasis group. Herein, the metastasis prediction gene group includes two genes MSR1 (NM_138716.1) and RET (M31213.1).

12-24-2009

Kengo Shibuya, Chiba JP

Patent application number

Description

Published

20110121184

DOI RADIATION DETECTOR - In a DOI radiation detector, scintillation crystals are arranged in three dimensions on a light receiving surface of a light receiving element, and a response of a crystal having detected a radiation ray can be identified on the light receiving surface. Thereby, a position at which the radiation ray is detected is determined in three dimensions. In this DOI radiation detector, regular triangular prism scintillation crystals are used, and response positions of the respective crystals are shifted for each set. This allows crystal identification without loss even with a structure such as a three-layer or six-layer structure hard to achieve by a quadrangular prism scintillation crystal.

Toru Shibuya, Chiba JP

Patent application number

Description

Published

20090181158

Method of Producing Cell Culture Container - To produce a cell culture container which is suitable for use in, for example, biochemical experiments, clinical experiments, and research and development of drugs. The production of the cell culture container includes providing a cell culture container base